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Robin Roberts was back for a "trial run" at the "Good Morning America" set after doctors said she was on her way to recovering from a bone marrow transplant

Robin Roberts visited the "Good Morning America" set Thursday for the first time since the anchor underwent a bone marrow transplant in September.

Cameras did not roll as she eased back into the swing of things, however, nor is Roberts expected to resume her on-air work until February.

Instead she returned to the Times Square studio where the ABC morning program is shot for a behind-the-scenes test run this morning. A spokeswoman for the network reports that she was at the studio at 5 a.m. after waking up at 3:45 a.m.

Roberts had to undergo the procedure after she was diagnosed with a rare blood disorder. She left the show in August.

As part of her dry-runs, she is seeing how her body adjusts to a punishing schedule that requires morning anchors to wake up in the early morning hours and to see how her skin reacts to the harsh television lighting.

"My doctors want me to see how many people I actually come in contact with," Roberts said in her interview last week. "How my body reacts to the stimulation, that's code word for stress, of being in the studio environment."

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